HD 77370 is a single[7] star in the constellation Carina. It has the Bayer designation b2 Carinae; HD 77370 is the identifier from the Henry Draper catalogue. This object has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 5.17.[2] It is located at a distance of 85 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +13 km/s.[2]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Carina |
Right ascension | 08h 59m 24.18162s[1] |
Declination | −59° 05′ 01.3569″[1] |
Apparent magnitude (V) | 5.17[2] |
Characteristics | |
Spectral type | F4V[3] |
B−V color index | 0.417±0.005[2] |
Astrometry | |
Radial velocity (Rv) | +13.27±0.63[2] km/s |
Proper motion (μ) | RA: −175.366[1] mas/yr Dec.: +281.700[1] mas/yr |
Parallax (π) | 38.1808 ± 0.1737 mas[1] |
Distance | 85.4 ± 0.4 ly (26.2 ± 0.1 pc) |
Absolute magnitude (MV) | 3.06[2] |
Details | |
Mass | 1.45[4] M☉ |
Radius | 1.67+0.05 −0.11[1] R☉ |
Luminosity | 4.834+0.28 −0.27[1] L☉ |
Surface gravity (log g) | 4.18[4] cgs |
Temperature | 6,699±97[4] K |
Metallicity [Fe/H] | 0.93[4] dex |
Rotational velocity (v sin i) | 60.4±3.0[5] km/s |
Age | 1.3±0.3[2] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
This is an ordinary F-type main-sequence star with a stellar classification of F4V.[3] It is around 1.3[2] billion years old and retains a relatively high projected rotational velocity of 60 km/s.[5] The star has 1.45[4] times the mass of the Sun and 1.67[1] times the Sun's radius. It is radiating 4.8[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,699 K.[4] The star is the most likely source of the X-ray emission detected at these coordinates.[8]